Nonexistence of a pair of arc disjoint directed Hamilton cycles on line digraphs of 2-diregular digraphs

被引:1
|
作者
Govindan, T. [1 ]
Muthusamy, A. [2 ]
机构
[1] Govt Coll Engn, Dept Math, Bargur 635104, Tamil Nadu, India
[2] Periyar Univ, Dept Math, Salem 634562, Tamil Nadu, India
关键词
Line graph; Hamilton cycle decomposition;
D O I
10.1142/S1793830915500342
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Bermond conjectured that if G is Hamilton cycle decomposable, then L(G), the line graph of G is Hamilton cycle decomposable. In this paper, we prove that, for any k > 5, there exists a directed Hamilton cycle decomposable 2-diregular digraph D of order 2k such that L(D) is not directed Hamilton cycle decomposable.
引用
收藏
页数:6
相关论文
共 12 条
  • [1] ON DIGRAPHS WITH NO 2 DISJOINT DIRECTED CYCLES
    THOMASSEN, C
    COMBINATORICA, 1987, 7 (01) : 145 - 150
  • [2] Arc-Disjoint Directed and Undirected Cycles in Digraphs
    Bang-Jensen, Jorgen
    Kriesell, Matthias
    Maddaloni, Alessandro
    Simonsen, Sven
    JOURNAL OF GRAPH THEORY, 2016, 83 (04) : 406 - 420
  • [3] Disjoint directed and undirected paths and cycles in digraphs
    Bang-Jensen, Jorgen
    Kriesell, Matthias
    THEORETICAL COMPUTER SCIENCE, 2009, 410 (47-49) : 5138 - 5144
  • [4] DIRECTED HAMILTON CYCLES IN DIGRAPHS AND MATCHING ALTERNATING HAMILTON CYCLES IN BIPARTITE GRAPHS
    Zhang, Zan-Bo
    Zhang, Xiaoyan
    Wen, Xuelian
    SIAM JOURNAL ON DISCRETE MATHEMATICS, 2013, 27 (01) : 274 - 289
  • [5] Vertex-disjoint directed and undirected cycles in general digraphs
    Bang-Jensen, Jorgen
    Kriesell, Matthias
    Maddaloni, Alessandro
    Simonsen, Sven
    JOURNAL OF COMBINATORIAL THEORY SERIES B, 2014, 106 : 1 - 14
  • [6] Disjoint cycles with different length in 4-arc-dominated digraphs
    Gao, Yunshu
    Ma, Ding
    OPERATIONS RESEARCH LETTERS, 2013, 41 (06) : 650 - 653
  • [7] Vertex disjoint cycles of different lengths in d-arc-dominated digraphs
    Ngo Dac Tan
    OPERATIONS RESEARCH LETTERS, 2014, 42 (05) : 351 - 354
  • [8] ARC-DISJOINT HAMILTONIAN CYCLES IN ROUND DECOMPOSABLE LOCALLY SEMICOMPLETE DIGRAPHS
    Li, Ruijuan
    Han, Tingting
    DISCUSSIONES MATHEMATICAE GRAPH THEORY, 2018, 38 (02) : 477 - 490
  • [9] Parameterized Directed k-Chinese Postman Problem and k Arc-Disjoint Cycles Problem on Euler Digraphs
    Gutin, Gregory
    Jones, Mark
    Sheng, Bin
    Wahlstroem, Magnus
    GRAPH-THEORETIC CONCEPTS IN COMPUTER SCIENCE, 2014, 8747 : 250 - 262
  • [10] Arc-disjoint paths and trees in 2-regular digraphs
    Bang-Jensen, Jorgen
    Simonsen, Sven
    DISCRETE APPLIED MATHEMATICS, 2013, 161 (16-17) : 2724 - 2730